查询词典 ammonia nitrogen

According to the investigation on the local situation of aquatic vegetation in Littoral Regions of Gonghu Lake and Meiliang Bay of the Wuxi Taihu Lake, the species of aquatic vegetation, community forms and biomass were acquired. Then a contrast of vegetation distribution characteristic between the two Littoral Regions was analyzed which induced to the analysis of impact factors. In the treatments designed as varying degree oxidation intimidate, the heavy metal cadmium and the ammonia nitrogen single and compound poisons, the COD sewage cultivate, the plant growth opsonin processes, the effect of the intimidate environment on the submerged plant growth and the physiological biochemistry characteristic was analyzed. The effective method to improve the resist adversity of submerged macrophyte was discussed. The results will give a suggestion to the restoration of the submerged macrophyte, the efficiency and reconstruction in Lake Ecosystem.

通过对无锡太湖两重要湖湾贡湖和梅梁湖湖滨带沿岸浅水区水生植被现状进行调查，了解了水生植物的种类、群落组成及生物量，对两湖湾湖滨带沿岸浅水区水生植被分布特征进行了对比，并进行了影响因素分析；通过不同程度的氧化胁迫、重金属镉与氨态氮单一和复合作用、高COD生活污水胁迫培养、植物生长调节素处理，分析胁迫环境和壳聚糖各自对沉水植物生长的影响及作用机理，探讨提高沉水植物逆境抗性的有效措施；探寻沉水植物修复的理论依据和有效途径，为急待进行水生植被恢复的湖泊提供依据和建议。

Taking piggery wastewater with high ammonia nitrogen and organic concentrations as treatment object,the ANAMMOX-based nitrosation process was investigated under the condition of ambient temperature of 25 ℃ and constant pH.

以高氨氮、高有机物浓度的养猪场废水为处理对象，在室温(25℃)、不调节pH的条件下，研究了基于厌氧氨氧化的亚硝化过程。

The major pollution indicators are potassium permanganate index, BOD and ammonia nitrogen.

主要污染指标是高锰酸盐指数、生化需氧量和氨氮。

The experiment is began with the natural rainwater quality, the runoff quality on the diverse roofage and different grade roadway, the results are as follows: The natural rainwater is good soft water, sometimes ammonia nitrogen content is more.

把西安理工大学作为文教区的典型代表进行研究，分别对天然雨水、不同材料屋顶和不同等级道路上的雨水径流水质进行了实验研究，结果表明：(1)天然雨水是很好的软水，氨氮含量有时较大

High concentration of ammonia-nitrogen wastewater was drained off in the production of vanadium sesquioxide (V2O3) in Panzhihua Steel Group Panhong Vanadium Production Ltd.

攀枝花钢铁集团攀宏钒制品有限公司三氧化二钒生产过程中产生浓度较高的氨氮废水，如直接排放将会对金沙江水体造成恶劣影响。

Exploratory study was made on the Guanting reservoir influent treatment by using two-stage BAF at extreme low temperature.The results show that the removal of organics and ammonia nitrogen is seriously inhibited due to low temperature,and the conversion of nitrite into nitrate is no longer a limiting factor of complete nitrification.One possible hypothesis is that the activity of nitrobacter is hi gher than that of nitrosomonas at extreme low temperature.

摘 要：两级曝气生物滤池在极低温度下(1℃以下)处理官厅水库入库水的探索性研究试验结果表明，有机物和氨氮的去除受到了低温的严重抑制，亚硝酸盐转化成硝酸盐不再是完全硝化反应的限制步骤，这可能是在极低温度条件下硝酸菌的活性高于亚硝酸菌活性的缘故。

Adopting quartz sand and active carbon to filtrate have achieved good results,and biological turnplate made biological filtrating and contemporary removed ammonia-nitrogen.

采用石英砂加活性炭过滤，其效果显著且经济，生物转盘进行生物过滤能同时去除氨氮，臭氧杀菌方便卫生且兼有增氧作用。

In the industrial wastewater, there is 216.1 thousands tons of COD, which is 23.9% fewer than last year; discharge of venomousness pollutants (cyanide, arsenic, mercury, lead, cadmium, sexavalent chrome, volatile hydroxybenzene) is 92.85tons, 30.76% fewer than last year; oil discharges is 900tons, 1% fewer than last year; ammonia-nitrogen discharges is 8.6 thousands tons.

在工业的废水中，有 216.1 数千吨的雪，是 23.9%少于去年；有毒污染物质(氰化物，砷，水银，领引，镉， sexavalent 铬，挥发性 hydroxybenzene)的解除是 92.85 吨，30.76%少于去年；油解除是 900 吨，1%少于去年；氨-氮的解除是 8.6 数千吨。

The safety concentration of ammonia nitrogen on the zoea larvae, mysis larvae and postlarvae was 0.295mg/L, 0.724mg/L, 1.072 mg/L respectively, and that of sulfurated hydrogen was 0.0430mg/L, 0.0553mg/L, 0.0705mg/L.

氨氮和硫化氢对日本对虾蚤状幼体、糠虾幼体和仔虾的安全浓度分别为：0.295，0.0430；0.724，0.0553；1.072，0.0705mg/L。

The alkalescent condition reduces the mass concentration of iron ions and fastens the nitration reaction of ammonia nitrogen, and leads to the concentration of nitrate.

偏碱性条件使铁离子质量浓度降低，同时促进了氨氮硝化反应进行，使矿井水中硝酸盐和亚硝酸盐质量浓度增加。

As she looked at Warrington's manly face, and dark, melancholy eyes, she had settled in her mind that he must have been the victim of an unhappy attachment.

每逢看到沃林顿那刚毅的脸，那乌黑、忧郁的眼睛，她便会相信，他一定作过不幸的爱情的受害者。

Maybe they'll disappear into a pothole.

也许他们将在壶穴里消失